Backtracking is necessary when design alternatives are explored or dead ends are reached. Unfortunately, current approaches support chronological backtracking only (undo or versio...
Bitmap-based collaborative graphics editing systems are a special class of real-time collaborative editing systems. Undo is an important and difficult problem in these systems. Ex...
While various models of undo have been proposed over the years, no empirical study has yet been done to discover which model of undo most closely aligns with what users expect an ...
Aaron G. Cass, Chris S. T. Fernandes, Andrew Polid...
Abstract. Existing Peer to Peer (P2P) collaborative editing systems do not allow any user to undo any modification. However, in such systems, users are not aware of others’ modi...